To be clear, what ought to have been the nature of the professional relationship between Martin Grime and Mark Harrison in conducting investigations on behalf of the PJ in Praia da Luz was simple.

Mark Harrison would draw up a schedule of searches.

Martin Grime would then conduct them, in accordance with the schedule Mark Harrison drew up.

Harrison did his bit:

Re Visiting Previously Searched Areas.

In considering the two scenarios that Madeleine McCann has been murdered and her body disposed of by a person on foot or in a vehicle, I have reflected on the areas within zone 1 that have been previously searched or subject to forensic examination.

Mark Warner Creche at Praia Da Luz.

This is the location of the last confirmed sighting by a person independent of family members of Madeleine McCann. Although this location was within the original search area it may well benefit from a further search using enhanced detecting methods for human remains. This will depend on the size of any outside grounds and concealed areas inside the building.

McCann's Apartment.

The apartment in which the McCann's had stayed may present further
opportunities to search. The use of a specialist EVRD (Enhanced Victim
Recovery Dog) and CSI dog (human blood detecting dog) could potentially indicate on whether Madeline's blood is in the property or the scent of a dead body is present. In relation to the dead body scent if such a scent is indicated by the EVRD and no body is located it may suggest that a body has been in the property but removed. This search process could be repeated in all the apartments that were occupied by the friends holidaying with the McCann's.
Murat's House and Garden.

The property has been forensically examined to recover any surface trace evidence however the house and gardens may benefit from a fully invasive specialist search to preclude the presence of Madeleine McCann.
A method previously employed on similar cases has been to use the below assets.
Deploy the EVRD to search the house and garden to ensure Madeleine McCann's remains are not present. The dog may also indicate if a body has been stored in the recent past and then moved off the property, though this is not evidential merely intelligence.
Deploy the CSI dog to search the house to locate any human blood.
This will act in support of the forensic examination already completed.
An inhibiting factor will be on areas where Luminol has been used.

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Deploy geophysical instruments in the house and garden to detect any burial of a body or concealment in voids.

These specialists should be supported by physical search teams exploring and accessing all areas where concealment of a child's body could be made typically 0.5m.

Murat's Vehicles.

All vehicles Murat has had access to have been forensically examined to recover any surface trace evidence however they may all benefit from a full search by the EVRD and CSI dogs. They may be able to detect whether a dead body has been transported in one of the vehicles for intelligence purposes or detect human blood deposits that can be recovered and
examined in a laboratory for Madeleine McCann's blood.

Open Area to East of Praia Da Luz.

This open area between the village urban limits and the Boavista golf club to the east and includes a plateau on which sits a trig point and mobile phone mast.
This area has been previously searched by officers and dogs walking through the area to check for Madeleine McCann's visible remains. However considering the new scenario of Homicide and concealed deposition this area affords many opportunities to dispose of a body. Within this area there are old empty properties, wells, thick vegetation, pockets of soft sand and natural fissures in the cliffs. Whilst there is no intelligence she is buried or concealed in this land it would be a natural place an offender may choose dose to the Village using the least effort principle. A proportionate response may therefore be considered to conduct a search of this area using a team of Victim Recovery Dogs (VRD) that are specifically trained to located concealed human remains.
Prior to undertaking this task it would be beneficial to consult with a Forensic Anthropologist with knowledge of this region of Portugal to give opinion as to the likely state of any remains to be found. Further research could also be conducted with regards to the natural scavenging predators in the area.

An inhibiting factor is that since the disappearance of the child an old empty house adjacent to the Trig Point on the Rocha Negra has been demolished and all rubble removed, If she was concealed within this property the search would be unlikely to detect her now.

No reference to the villa (the McCanns moved in to way after a full-scale search for Madeleine had been mounted); no reference to any vehicles besides those owned or driven by Robert Murat

Emphatically no reference to the gym.

And note Harrison's use of the first-person, I, in the first sentence I cite.

Harrison lapses to the impersonal pronoun it to outline (rather than recommend) an extended range of searches:

In complying with these terms I undertook a series of briefings and site visits. These were with GNR and PJ personnel who had been involved in the previous searches conducted the week following Madeleine McCann’s disappearance in Praia da Luz.

The output of this process of reconnaissance and review was a written document entitled “Madeleine McCann Search Decision Support Document” (see appendix 2) and submitted to the PJ with copies supplied to Leicestershire Police and NPIA on 23-07-07.It recommended considering re searching:

- All accommodation occupied by the McCann family and their friends as well as any hired vehicles.
- The villa and garden occupied by Robert Murat and any vehicles he had access to.
- Areas of wasteland adjacent to Murat’s and the McCann’s apartment.
- Areas of the beach in Praia da Luz.
- A portion of the coastline east of Praia da Luz.

These recommendations were based on the fact that these areas had not been previously searched with the specific intent to locate Madeleine McCann’s concealed and deceased body and that the areas recommended afforded likely and obvious places to consider for concealment in such an investigation.

This document was discussed on 23-07-07 with the PJ Director, myself and the Leicestershire Police liaison officer DI Neil Holden who made relevant notes.

On 25-07-07 the PJ Director decided his officers would re-search some of the areas suggested within the report. He also decided the order of their priority. These were the accommodation the McCann’s and their friends have occupied in Praia da Luz, the villa and the grounds occupied by Robert Murat, wasteland that surrounds these locations and any known vehicles the suspect, the McCanns and their friends had access to when Madeleine disappeared.

On 26-07-07 the PJ Director requested I consider the beach and marine environment at Praia da Luz for re-search and compile a report. I held meetings with coastal dynamic experts from the University of the Algarve in the presence of PJ officers and submitted a report to the PJ on 31-07-07 entitles “NPIA OP TASK Search Doc Beach and Marine” (see appendix 3) with copies sent to Leicestershire Police and NPIA.

On 30-07-07 a meeting was held with the PJ Director, myself and Leicestershire Police liaison officer DI Alan Orchard, who made relevant notes, to discuss the beach and marine environment at Praia da Luz and set a timeline for the PJ to re-search areas.

After a week of intense work, Harrison presents the results of his study to my coordinating group. Even if we were expecting it, his conclusions confirm our worst fears. The most plausible scenario is the following: there is no doubt that Madeleine is dead, and her body is hidden somewhere in the area around Praia da Luz. He praises the quality of the work carried out by the Portuguese authorities in trying to find the little girl alive. According to him, the time has come to redirect the searches in order to find, this time, a body hidden in the surrounding area.

Let's compare that with what Mark Harrison actually said ...

First, more from The book of many lies:

The figures quoted in the report he hands over give us the shivers. The crimes, including those of a sexual nature, are committed by the parents in 84% of cases; 96% are perpetrated by friends and relatives. In only 4% of them is the murderer or abductor a total stranger to the victim. In this roundabout way, Mark Harrison points out that the guilty party may be a person close to Madeleine, and even her own parents. From now on, we have to explore this track, especially as the others have proved fruitless.

In respect of the part that I embolden, Mark Harrison did, indeed, consult statistical data bases.

Mark Harrison, ruling out burial:

Sub Surface Burial on P D Luz Beach

For Body Disposal Purposes The Beach Can Be Separated And
Discussed Into 6 Areas.

Figure 2.The boulders in the rock falls are too large
to man handle. Vegetative growth suggests rock
falls have been in situ for some time. The low energy
wave action would not move any of the boulders. It
is possible a small child could be secreted amongst
the rocks in natural voids.

Figure 3.The cliff edge at the base of the beach is at
an angle that inhibits soil removal. The shale re fills
any hole dug and is unsuitable to achieve a burial.

Figure4.At the base of the cliff are wave cuts where
the bedrock has been eroded by wave action. Here
sand can be easily dug but after a few centimetres
the digger reaches the bed rock, preventing a
successful burial.

Figure 5.The beach cusps or berms are mounds of
sand made by wind action. These cusps form at the
limit of the tides reach and would only be recovered
in storm conditions. Digging on the cusps is easy but to achieve as
more than a few centimetres depth is very difficult to
the fine sand granules refill the hole

Figure 6.The dark sand in this image shows the
intertidal area. Here digging and burial could
possibly be achieved although it would be through a
mixture of grave1 and water. However any burial
would be quickly exposed by wave action and
ultimately taken into the sea.

I will add what he had to say about statistical data bases.

Homicide Disposal Datasets

A limited search has been conducted of datasets that contain body disposal
data in homicide cases (CATCHEM, SCAS, FBI). Although this search was
limited due to the time constraints placed on this reports delivery an inference
can be gained from both the data sets and the authors own case work
experience. I have also consulted with NPIA and FBI colleagues to benefit
from their experiences. The conclusion inferred is that beach burial is extremely rare. This should not
surprise us as to dig on a beach is a high risk activity requiring expending time
and energy when a more 'least effort" disposal is readily available, that is
directly into the sea. Of those limited cases that were found to be a beach
disposal the overwhelming majority were surface depositions with only one
recorded concealment using rocks on top of a 2 year old child (CATCHEM
Database)

The penultimate sentence and paragraph of Mark Harrison's third, and final, report.

I am currently of the opinion on the available information and statistical datasets that if death has occurred, that it is possible that Madeleine McCann’s body has been disposed into the sea at Praia da Luz. (See my second report entitled “NPIA OP TASK Search Doc Beach and Marine”).

I am very certain that, originally, what I quote below and highlight was originally written re-searching.

If I am right, now, the hyphen has disappeared and its place has been inserted a gap:

In complying with these terms I undertook a series of briefings and site visits. These were with GNR and PJ personnel who had been involved in the previous searches conducted the week following Madeleine McCann’s disappearance in Praia da Luz.

The output of this process of reconnaissance and review was a written document entitled “Madeleine McCann Search Decision Support Document” (see appendix 2) and submitted to the PJ with copies supplied to Leicestershire Police and NPIA on 23-07-07.
It recommended considering re searching:

....

As far as I am aware, according to the files online, everything searched after what I embolden was only searched once.

And, of course, re-searching, or (now) re searching, is quite different from researching.